Food & Farming

From just two bulls, 9 million US dairy cows

From just two bulls, 9 million US dairy cows

There are more than 9 million dairy cows in the United States, and the vast majority of them are Holsteins, large bovines with distinctive black-and-white (sometimes red-and-white) markings. The amount of milk they produce is astonishing. So is their lineage. When researchers at the Pennsylvania State University looked closely at the male lines a few years ago, they discovered more than 99 percent of them can be traced back to one of two bulls, both born in the 1960s.

Lab-grown meat might be worse for the climate than farting cows

Lab-grown meat might be worse for the climate than farting cows

Scientists and companies working to grow meat from animal cells will need to minimise energy use and avoid fossil fuels if claims that cultured meat is better for the climate than real meat are to hold true, researchers said.

Cultured meat production with high energy inputs could spur global warming more in the long-term than some types of beef cattle farming if the world shunned a low-carbon path, said a study published on 19th February by the UK-based Oxford Martin School.